.icon-location {
    position: relative;
    width: 100%; /*先画一个正方形*/
    height: 100%;
    border-radius: 50% 50% 50% 0; /*然后将三个角变成圆角*/
    background: #fff;
    transform: rotate(-45deg); /*最后，旋转45度*/
   }
   .icon-location:after { 
    content: '';
    width: 40%;
    height: 40%;
    margin: 30% 0 0 29%;
    background-color: #0097FF;
    position: absolute;
    border-radius: 50%;
   }